Revolving harrow.



M. SKAKSON.

REVOLVING HARHOW.

APPLICATION FILED JULY 23, 1913. 1,125,409, Patented Jan.19,1915.

2 SHEETS-SHEET 1.

WITNESSES M. SKAKSON.

REVOLVING HARROW.

APPLICATION FILED JULY 23, 1913.

1,125,409. Patented Jan. 19, 1915.

2 $$HEETS-SHEET 2.

ATTORN EY THE NuRRIS PETERS 60.. PHOTO-LITHO.. WASHING FON. D. c.

llNfE TIES ATENT @FFKQE.

MARTINAS SKAKSON, OF MISSOURI VALLEY, IOV/A.

REVOLVING HARROW.

Application filed July 23, 1913.

To all whom it may concern Be it known that I, MARTINAS SKAKSON, acitizen of the United States, residing at Missouri Valley, in the countyof Harrison and State of Iowa, have invented a new and useful RevolvingHarrow, of which the following is a specification.

The invention relates to improvements in revolving harrows.

The object of the present invention is to improve the construction ofrevolving harrows, and to provide a simple and comparatively inexpensiveharrow of strong and durable construction, adapted to dig up the groundand leave the same level and smooth and in proper condition forcultivation.

A further object of the invention is to provide a revolving harrowequipped with adjustable means adapted to enable the harrow teeth to beraised and lowered to elevate them clear of the ground and also toenable them to penetrate the soil to the desired depth.

lVith these and other objects in View, the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the accompanying drawings, and pointed out in the claimshereto appended; it being understood that various changes in the form,proportion, size and minor details of construction, withi1. the scope ofthe claims, may be resorted to without departing from the spirit orsacrificing any of the advantages of the invention.

In the drawings :Figure 1 is a longitudinal sectional View of arevolving harrow, constructed in accordance with this invention. Fig. 2is a transverse sectional View of the same. Fig. 3 is a detailperspective view of a portion of the main frame, illustrating theconstruction of the curved guard or shield. Fig. 4 is a detail view ofone of the bearings of the main frame. Fig. 5 is a detail horizontalsectional view, illustrating the manner of mounting the slides. Fig. 6is a detail pcrspectiveview of one of the slides.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

In the accompanying drawings in which is illustrated the preferredembodiment of the invention, 1 designates harrow teeth mounted on theexterior of a transversely disposed cylindrical shell 2 constituting a.

Specification of Letters Patent.

Patented Jan. 19, 1915.

Serial No. 780,827.

revolving support for the teeth and constructed of suitable metal andprovided at its ends with spiders 3, which are mounted on a transverseshaft 4.. The harrow teeth, which are curved longitudinally, have theirinner ends fitted against the outer face of the cylindrical shell andextend outwardly therefrom, their outer ends being tapered as shown. Theteeth, which present front concave faces to the soil in approaching thesame, are adapted to readily enter the soil and are secured to thecylindrical shell by means of threaded stems 5, having flattened outerterminal portions 6 to which the harrow teeth are directly secured bybolts 7, which pierce the outer portions of the said teeth. The threadedstems 5 pierce the cylindrical shell 2 and are provided with inner andouter nuts 8 and 9 between which the shell is firmly clamped, wherebythe harrow teeth are rigidly mounted on the shell and supported in aprojecting position. The harrow teeth are preferably disposed indiagonal rows on the cylindrical shell and the teeth of each row arearranged opposite the spaces or intervals between the teeth of theadjacent rows. By this arrangement the soil over which the harrow passesis thoroughly and uniformly operated on by the harrow teeth.

No claim is made in the present application to the construction of theburrow cylinder.

The arms of the spider 3 are provided with inwardly extending terminallugs 10, preferably arranged on the exterior of the cylindrical shelland pierced by the threaded stems of the adjacent harrow teeth andsecured to the shell by the nuts of such threaded stems. The spiders areprovided with central openings 11 in which the shaft 4: is secured. Thesaid shaft projects beyond the spiders to form terminal journals 12,which are arranged in suitable bearings 13 of a main or supportingframe. The shaft, which is fixed to the cylindrical shell, rotatesfreely in the said bearings, but the cylindrical shell may be journaledin any other suitable manner.

The main or supporting frame comprises in its construction. a curvedguard or shield 14 of stout sheet metal or other suitable material andextending upwardly and rearwardly from the rear end of a tongue 15 overthe front and top portion of the revolving" cylinder or cylindricalshell, as

clearly illustrated in Fig. 1 of the drawings. The curved guard orshield is connected at its side edges to the upper ends of a pair ofvertical standards 16, which are connected at their lower portions withthe front portion of the guard or shield by side bars 17. The guard orshield 14 is provided at the front with a forwardly extendinghorizontally disposed transverse flange 18, constituting a step andcentrally secured to the upper face of the tongue at the rear endthereof. The ends of the flange 18 are also bolted or otherwise securedto the front ends of the side bars 17 and the tongue is braced by a pairof forwardly converging bars or braces 19 secured at their rear ends tothe lower face of the flange 18 adjacent to the front end of the sidebars 17 and having their front terminals secured to the side edges orfaces of the tongue by a transverse fastening device 20. The bearings,which receive the terminals of the transverse shaft 4, are arranged atthe rear ends of the side bars and at the inner faces of the verticalstandards 16. The parts of the main or supporting frame may be fastenedtogether by any suitable means, and the frame may be braced in anypreferred manner to provide a structure of the requisite strength.

The vertical standards 6 are provided at their outer faces with ways 21,formed by vertical guide flanges 22 arranged at the side edges of thestandards and approximately L-shaped in cross section to provideopposite grooves. The ways receive slides 23 consisting of plates orpieces having their side edges fitted in the grooves of the flanges 22and provided at their lower portions with outwardly projecting journals24 and having lugs or ears 25, extending out wardly from the upper endsof the slides and connected with vertical adjusting screws 26. Thejournals of the slides receive wheels 27 secured on the journals by keys28 or other suitable fastening means and supporting the machine. Thevertical adjusting screws, which are provided at their upper ends withcrank handles 29 or other suitableoperating means, engagethreadedopenings 30 of fixed nuts or lugs 31 and are provided withsmooth reduced lower ter-' minals 32 secured in openings 33 of the lugsor ears 25 by keys 34 or other suitable fastening means. The fixed nutsor lugs 31 are arranged at the upper ends of the standards 16 and arepreferably formed integral therewith. The screws are adapted to beadjusted to raise and lower the main or supporting frame and therevolving cylinder to arrange the harrow teeth clear of the ground andalso in position to penetrate the soil to the desired depth. As themachine is drawn forward, the harrow teeth engage and penetrate the soiland uniformly dig up the same, leaving the soil in a smooth levelcondition without forming ridges and furrows therein.

The shield or guard is provided at the top portion with a curved seatflange 85 and it has a foot rest 36 at its lower portion. The guard orshield with the flange 35 forms a seat for the accommodation of thedriver, and the foot rest 36 preferably consists of a substantiallyL-shaped bracket or plate having one of its sides or wings secured tothe guard or shield.

WVhat is claimed is A harrow of the class described comprising arevolving support having a shaft provided with soil engaging means, amain frame including spaced vertical standards located at opposite sidesof the harrow, said standards being provided at their outer faces withguides or ways and havingbearings projecting from the inner faces of thestandards at the lower portions thereof and receiving the transverseshaft, a curved guard or shield extending across the spacebetween andconnecting the upper ends of the standard, said guard or shieldextending clownwardly and forwardly over the revolving support, and sidebars secured to and extending rearwardly from the lower front end of theguard or shield and connected at their rear ends with the lower portionsof the standards, spindles adapted to receive carrying wheels and havingslides movable in the said guides or ways, adjusting means carried bythe main frame and connected with the slides, and a tongue connectedwith the lower front portions of the guard or shield, the latter beingprovided at its upper portion with a seat.

In testimony, that I claim the foregoing as my own, I have heretoaffixed my signature in the presence of two Witnesses.

MARTINAS sKAKso-n.

YVitnesses H. M. SILSBY,.- P. J. Moimow.

Copies of this patent may be obtained for five cents each, by addressingthe Gommissioner of Patents,

washingtomm. C.

